<!doctype html>
<html>

<head>
	<meta charset="utf-8">
	<title>I love you</title>
	<style type="text/css">
		body {
			display: flex;
			justify-content: center;
			align-items: center;
			background: #000;
		}

		div {
			font-size: 200px;
			color: gold;
			display: flex;
			justify-content: center;
			align-items: center;
			line-height: 700px;
		}
	</style>
</head>

<body>
	<div>I love you</div>
</body>

</html>